NEW! JAM SPACE! ⚡️ PLAYGROUND! ⚡️CHAT ROOM! Come make trouble over here The many sides of the supernova remnant Cassiopeia A. Located 10,000 light-years away in the northern constellation Cassiopea. It is the remnant of a once massive star that died in a supernova explosion 325 years ago. This post is for paying subscribers only Subscribe now Already have an account? Sign in.
